Car truck



Jam 1%1927 H. M. PFLAGER CAR TRUCK Filed Oct. 15. 1923 2 Sheets-Sheet lH. M. PFLAGER CAR TRUCK' Filed Oct. 13. 1923 2 Sheets-Shea?. 2

Jan. 18, 1927. 1,614,932

nvm/Hoz Patented Jan. 18, 1927.

UNITED STATES PATENT. OFFICE.`

HARRY M. PFLAGER, F ST. LOUIS, MISSOURI, ASSIGNOR TO COMMONWEALTH STEELCOMPANY, OF ST. LOUIS, MISSOURI,` A CORPORATION OF NEW JERSEY.

CAR TRUCK.

Application lcd October 13, 1923. Serial No. 668,377.

'lhis invention relates to a new and useful improvement in car truckconstruction and particularly to the types disclosed in United StatesLetters Patent No.' 995,560, dated .Tune 20, 1911 and Reissue LettersPatent No. 14.221, dated November 28, 1916, the original of whichLetters Patent No. j1,147,430, was granted to me on July 20, 1915,andLetters Patent No. 1,358,016, dated November 9, 1920.

This invention, as in those above mentioned, contemplates the use of cartrucks adapted to carry rigid cars and to support vthe cars at two ointson each truck. In this type of truc it is necessary that the axles havecertain lateral movement relative to the normal position of the car bodys o that curves may be negotiated. It has previously been the practiceto pivotally connect the journal box to the side frame to permitsuchlateral motion. j

- The object of my invention is to provide a journal box cast integrallywith the side frame and a journal box pivot plate which will permit thenecessary lateral motion and hold the bearing properly centered at alltimes.

With the foregoing and other objects in view, my invention consists incert-ain novel features of construction and arrangement of parts,hereinafter more fully described and claimed, and illustrated in theaccompanying drawings, in which- Figure l is a side elevational view ofa car truck of my improved construction.

Figure 2 is a cross section'taken on the lines 2-2 of Figure 1.

Figure 3 is a side elevation of the journa box pivot plate.

The numeral 1 in the drawings indicates the side frame of a car truck. 2is a pivot plate fixed on body bolster of the car (not shown) and whichrotatably connectsfwith the top bearing plate 2 of truck contained inside frame 1. 3 are journal boxes cast integrally with side frame 1.

4 is an axle having the customary bearing surface 5.- The journalbearing 6 rests on bearing surface 5 of laxle 4 and is also of usualconstruction. 7 is a bearing wedge having an opening 8 in its outer endinto which a hook or some similar means (not shown) may be introduced toremove said bearing wedge. 9 is a journal box pivot plate having a boss10 on its top portion Aittin in a corresponding recess 11 in the siderame 1. This journal box pivot plate 9 is held in place by a verticallydisposed pin 12 which passes upwardly through side frame 1. The head 13of pin 12 fits 'in a recess 14 on the underside of journal box pivotplate 9. Recess 14 is directly under and in line with boss 10. The upperend of pin 12 may be threaded fora nut or the pin may beheld in place bya key passed through the side frame, However, I prefer the constructionshown in Figure 2, 1n which a key 15 fits through o ening 15 in pin 12and rests on top of si e frame 1 in such a manner as to hold pin 12 inproper position.

The end of the journal box pivot plate 9 extending toward the end ofaxle 4 is bifurcated and bent downwardly forming hook-like members 16and 17 which bear against' the outer edge of the bearing wedge 7 therebylocking it in place against longitudinal movement relative to the axle4. It will be noted that the opening 8 in the bearing wedge 7 isimmediately between the bifurcated ends 16 and 17 of pivot plate 9 sothat bearing wedge 7 i.; locked in, yet its removal may be eiected byraising the journal box slightly and inserting a hooked rod into theopening 8 of the bearing wedge to remove it. A

Depending from either side of the pivot plate 9 are tongues 18 and 19which lit over the sides of bearing wedge 7 and hold it against lateralmovement relative to axle 4 and also against rotation with the bearingsurface 5 of the axle 4. 2O is a friction surface surrounding boss 10 onthe to surface of the journal box pivot plate 9. his friction surface 2Orests againstya corres onding surface 21 on the underside o side frame 1within the journal box 3.

In this type of car truck, when rounding a curve to the left, forexample, the foryward axle would move to the left and the rear axlewould move to the right an equal distance, maintaining the lon itudinalcenters of the axle parallel at al times. The journal box pivot plate 9would pivot the necessary distance,.at the same time holding the bearingwedge 7 and the bearing 6 in proper alignment with the axle 4. The jourin this type truck, as in any other, strengthens it, lessens the cost ofmanufacture, and simplifies the struct-ure.

-I claim:

l. A car truck including a side frame, a pivotal connection between saidside frame and the car body, a journal box being a part of ysaid sideframe, an axle, a journal bearing, a bearing Wedge, and a journal boxplate pivotally connected to said side frame, said plate separating saidbearing Wedge from said journal box and acting as a friction membertherebetween.

2. In a truck, a side frame, a journal box cast integrally7 therewith,an axle, a bearing member resting on said axle, a bearing wedge restingon and locking said bearing in position, and a plate pivotally connectedto said side frame and locking said bearing wedge in position.

3. In a truck, a side frame, a journal box, and al removable journalbearing element secured directly to said side frame.

4. A truck comprisingr a side frame, a journal boxh'an, axle, a.bearing, a bearing wedge, and means fixed to said side frame for lockingin said bearing wedge.

5. A truck comprisingr a side frame, a journal box, an axle, a bearing,and a bearing Wedge, `and a removable pivotal locking element fixedbetween said bearing wedge and said side frame.

6. In a truck including a side lframe, a

. journal box, a bearing wedge a plate within said `journal boxconnected to said side frame, and tongues depending from the body ofsaid plate to lock said bearing Wedge in position.

7. In a truck including a side frame, a journal box, a bearing wedge,and a plate within said journal box connected to said side frame andlocking said bearing wedge in position.

8. In` a truck including a side frame and a journal box, a removablejournal bearingI element secured through the top of the box to said sideframe.

9. In a truck including a side frame and a journal box, a plate memberwithin said box adapted for pivotal movement therein. means locking saidplate against horizontal displacement and a removable connection to saidside frame to prevent vertical displacement.

10. In a truck, a side frame, a journal box, a journal bearing element,and a holding member for said element secured directly to said sideframe.

l1. In a truck, a side frame, a journal box, the bottom of said frameover said box being formed integrally with the top ot' the latter, and ajournal bearing within the box pivotally engaging the bottom of saidJframe.

12. In a truck, a journal box, a side frame, extending over said box,and a journal bearing element in said box having pivotal eontact withsaid frame.

In testimony whereof I hereunto afiix my signature this 4th day ofOctober, 1928. 'l

H. M. PFLAGER.

